Deep Water Paradise
For the secret realm to reach 200 million people, it took six months in total. For the smaller realms were extremely dangerous, though they were called minor realms, it was extremely large, and the creatures inhabiting such places were extremely dangerous.
When the realm have the full number of people, the people of the previous realm will be trapped until the next realm has finished the challenge, that is, those who failed to enter the next realm, will have to wait for the group that entered first to finish the challenge for the next group to enter.
But surviving in any of the realms was extremely difficult, the realms became even more difficult when Liu Yang entered, for he was at level 999 and rank 9, and creatures were generated based on the levels of all participants. The realms that Liu Yang entered had creatures of level 999 and this increased the difficulty of the challenge many times.